/*! 
    \file animation3d.h
*/


#include "animation.h"

#include "vector.h"
class PNode;

#define DELTA_X_3D 0.05  //!< the percentag of the distance that doesnt have to be done by neg_exp (asymptotical) ~ maschinendelta

//! KeyFrame3D Struct
/**
   This represents one point with direction of the animation
*/
typedef struct KeyFrame3D {
  float duration;                   //!< The duration of this KeyFrame
  Vector position;                  //!< The position of this KeyFrame
  Quaternion direction;             //!< The direction of this KeyFrame
  ANIM_FUNCTION animFunc;           //!< with whitch function to iterate to the next KeyFrame3D
};

//! Animation Struct
/**
   This represents an animation for a object
*/
class Animation3D : public Animation
{
 public:
  Animation3D(PNode* object);
  virtual ~Animation3D(void);
    
  virtual void rewind(void);

  void addKeyFrame(Vector position, Quaternion direction, float time, ANIM_FUNCTION animFunc = ANIM_LINEAR);
  //  void addKeyFrame(KeyFrame3D* frame);

  virtual void tick(float dt);

 private:
  // animation functions
  void setAnimFunc(ANIM_FUNCTION animFunc);
  void constant(float timePassed) const;
  void linear(float timePassed) const;
  void sine(float timePassed) const;
  void cosine(float timePassed) const;
  void exp(float timePassed) const;
  void negExp(float timePassed) const;
  void quadratic(float timePassed) const;
  void random(float timePassed) const;
  //  ANIM_FUNCTION animFunc;
  void (Animation3D::*animFunc)(float) const;      //!< A Function for the AnimationType

  KeyFrame3D* currentKeyFrame;                     //!< The current KeyFrame
  KeyFrame3D* nextKeyFrame;                        //!< The KeyFrame we iterate to
  tList<KeyFrame3D>* keyFrameList;                 //!< The KeyFrameList

  // more class-local description
  PNode* object;                                   //!< The Object from which to Animate something
  Vector lastPosition;   //!< ??
  Vector tmpVect;        //!< what for??
  float deltaT;          //!< ??
  float expFactor;
};